Indoor ultrasonic pest repellent. Easily plugs into any outlet. Rids home or office of unwanted pests such as mice, rats, spiders, cockroaches, as well as other rodents and insects. Ideal to use in garages, kitchens, bedrooms, bathrooms, basements, garages, and offices. Indoor pests are deterred because they cannot adapt to the constantly changing ultrasonic noise that the unit emits. Humane, non-toxic, and chemical free. LED (light emitting diode) indicator light illuminates when the unit is functioning. Operate continuously, occasionally moving to different locations as needed. Coverage is 1 unit per average size room, approximately 500 square feet.